1,11-Diamino-3,6,9-trioxaundecane CAS 929-75-9

1,11-Diamino-3,6,9-trioxaundecane CAS 929-75-9 from Aure Chemical: Sourcing and Export Support

1,11-Diamino-3,6,9-trioxaundecane, commonly referred to as NH2-PEG4-NH2, is a tetraethylene glycol-based diamine featuring a longer hydrophilic polyether chain than shorter PEG analogs. The extended spacer provides increased flexibility and water compatibility, making it suitable for constructing functional molecules where a slightly longer linker distance is beneficial. Aure Chemical offers sourcing support for this diamino PEG derivative to customers working on pharmaceutical intermediate development and specialty organic synthesis projects.

The primary amino end groups support efficient coupling chemistry, while the PEG4 segment enhances solubility and reduces steric hindrance in conjugation applications. It is typically supplied as a liquid with purity specifications in the 95% to 99%+ range. This compound serves as a practical building block for researchers and process chemists seeking reliable PEG-based spacers in fine chemical workflows.

Basic Information

CAS No.	929-75-9
EC No.	213-207-2
Linear Formula	H₂N(CH₂CH₂O)₃CH₂CH₂NH₂
Molecular Weight	208.26 g/mol
Appearance	Colorless to pale yellow liquid
Melting Point	Not available (typical reference)
Boiling point	145 °C at 0.05 mmHg (lit.)
Density	~1.04 g/mL at 20 °C (lit.)
Solubility	Soluble in water and polar organic solvents
Storage Conditions	Keep in a tightly closed container in a cool, dry and well-ventilated place. Protect from moisture and incompatible materials.
Chemical Structure

Key Applications

• PEG linker intermediate: The PEG4 chain length offers an extended hydrophilic spacer ideal for PEGylation and bioconjugate preparation where moderate linker distance improves molecular performance.

• Molecular linker intermediate: Serves as a flexible polyether building block for assembling functional organic structures through its terminal amino groups in specialty chemical synthesis.

• Bioconjugation research: Facilitates efficient linking of biomolecules and labels via primary amine coupling, supporting studies in medicinal chemistry and surface modification.

• Fine chemical intermediate: Applied in the development of advanced intermediates requiring a water-soluble diamine spacer for pharmaceutical and specialty synthesis routes.

• Process development: Supports custom synthesis projects and route optimization involving hydrophilic PEG-based diamines for laboratory and pilot-scale work.

Why Work with Aure Chemical for 1,11-Diamino-3,6,9-trioxaundecane

• Consistent product quality: High-purity material maintained with reliable batch consistency suitable for fine chemical and research applications.

• Flexible global supply: Support for laboratory, pilot, and bulk quantities through established international logistics and export arrangements.

• SDS and COA support: Comprehensive documentation including SDS and COA is provided to assist with quality assessment, regulatory review, and procurement.

• Packaging and technical service: Responsive technical communication and help with selecting packaging options matched to product form and order volume.

Packaging and Storage

• Packaging: Supplied in small quantity sample bottles, 1 L to 25 L HDPE drums, and customized liquid packaging options upon request.

• Storage: Store in tightly closed containers in a cool, dry, and well-ventilated area, protected from moisture and incompatible substances.

• Handling of opened containers: Minimize air and moisture exposure after opening; reseal promptly and use contents within recommended timeframes.

• Bulk supply: Flexible packaging and delivery solutions available for pilot-scale and larger commercial orders.

Safety and Handling

• General handling: Follow good industrial hygiene practices. Avoid direct contact with skin, eyes, and clothing during handling and transfer operations.

• Personal protection: Wear suitable personal protective equipment including chemical-resistant gloves, safety goggles, and appropriate protective clothing.

• Documentation review: Consult the latest Safety Data Sheet prior to any handling, storage, transportation, or use of the product.

• Compatibility: Evaluate compatibility with other process materials and avoid exposure to strong oxidizing agents or conditions that could affect amine groups.